What is the reason that the world farmers in twisting rice-planting songs

Now rural people twisting rice-planting songs, square dancing more, the reasons are: 1, most of the rural areas to achieve mechanized production, saving labor; 2, the development of intensive industrial production, saving labor; 3, with the development of social and industrial economy, occupying more land, rural arable land is reduced; the remaining workforce; 4, the application of scientific planting, the use of herbicides, etc., to save labor time; there are also Many, many more ....... Therefore, farmers also have time for entertainment, twisting rice-planting songs, square dancing, etc.;